Doping-enhanced dipolar dynamics in ice V as a precursor of hydrogen ordering in ice XIII

K. W. Köster, A. Raidt, V. Fuentes Landete, C. Gainaru, T. Loerting, and R. Böhmer
Phys. Rev. B 94, 184306 – Published 15 November 2016

Abstract

Dielectric spectroscopy measurements are carried out in the temperature range from about 100 to 145 K on nominally pure ice V as well as on crystals doped with KOH and with HCl in order to investigate their reorientation dynamics at ambient pressure. The orientational glass transition temperature of pure ice V is detected at 123 K, in agreement with previous indications from calorimetry. KOH doped ice V displays an about 60-fold enhanced hydrogen dynamics and the dipolar relaxation induced by HCl doping is even by a factor of about 40 000 faster than that of the undoped material. The phase transition of HCl doped ice V to ice XIII is accompanied by a significant reorientational slowdown and a pronounced freeze-out of the electrical susceptibility. The results obtained near this transition are discussed in relation to other order/disorder ice pairs such as ice I/XI and ice XII/XIV.

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  • Received 5 September 2016

DOI:https://doi.org/10.1103/PhysRevB.94.184306

©2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

K. W. Köster1, A. Raidt1, V. Fuentes Landete2, C. Gainaru1, T. Loerting2, and R. Böhmer1

  • 1Fakultät Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany
  • 2Institute of Physical Chemistry, University of Innsbruck, A-6020 Innsbruck, Austria

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Issue

Vol. 94, Iss. 18 — 1 November 2016

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